absorb - to take in or soak up atmoshpere- layer of air that surrounds Earth atom - the tiniest part of an element that has all the properties of that element. Everything is made up of atoms. cloud- mass of tiny water droplets or ice crystals in the air condensation - process of changing from gas to liquid when heat is taken away condense - when a gas turns into a liquid, usually as a result of cooling dam - a strong barrier built across a stream or river to hold back water estuary - area where a river meets the ocean and fresh water mixes with salt water evaporates - when a liquid changes into a vapor or gas evaporation - process of changing from liquid to gas when heat is added fresh water - water that does not contain salt gas- the state of matter that does not have a definite shape or volume. glacier - huge, heavy mass of slowly moving ice groundwater - fresh water that is stored in the ground humidity - amount of water vapor in the air hydrogen - a colorless gas that is lighter than air and catches fire easily. iceberg - floating chunk of ice that broke off an ice cap or glacier ice cap - think sheet of ice covering a large area infiltration - when rain hits the Earth it sinks into the ground in the process called infiltration lake - large body of water surrounded by land liquid- the state of matter that has a definite volume but no definite shape. matter - anything that takes up space and has weight such as a solid, liquid, or gas melt - to turn from a solid into a liquid when heat is added molecule - the smallest part of a substance that displays all the chemical properties of that substance. It is made up of more than one atom. ocean- large body of salt water that covers almost three-fourths of Earth; the world ocean is divided into the Pacific, Atlantic, Indian, and Arctic Oceans oxygen - a colorless gas found in the air. Humans and animals neet oxygen to breath. Oxygen makes up 21% of the Earth's atmosphere. photosynthesis - process by which green plants use the energy in sunlight to make their own food precipitation - any form of water that falls from clouds to Earth, such as rain, snow, sleet, or hail river- fresh water flowing in a channel runoff - water moving along the top of the ground; water from precipitation or from melting glaciers or snow moving along the ground salt water - water that contains salt, such as that found in the oceans and in certain inland bodies of water solid -the state of matter that has a definite shape and a definite volume stomata - is the small pores on plants that give off vapors and oxygen into the air surface water - water on Earth's surface in lakes, ponds, and rivers transpiration - process by which water evaporates through tiny holes in a plant's leaves volume - the amount of space taken up by a three-dimensional shape such as a box or a room water cycle - constant movement of water from Earth to the atmosphere and back to Earth; water evaporates, condenses to form clouds, and falls back to Earth as precipitation water table - highest level of soil and rock that is completely filled with groundwater water treatment plant - plant where water is treated to make it safe to drink water vapor - water in the form of a gas
Vocabulary
absorb - to take in or soak up
atmoshpere - layer of air that surrounds Earth
atom - the tiniest part of an element that has all the properties of that element. Everything is made up of atoms.
cloud - mass of tiny water droplets or ice crystals in the air
condensation - process of changing from gas to liquid when heat is taken away
condense - when a gas turns into a liquid, usually as a result of cooling
dam - a strong barrier built across a stream or river to hold back water
estuary - area where a river meets the ocean and fresh water mixes with salt water
evaporates - when a liquid changes into a vapor or gas
evaporation - process of changing from liquid to gas when heat is added
fresh water - water that does not contain salt
gas - the state of matter that does not have a definite shape or volume.
glacier - huge, heavy mass of slowly moving ice
groundwater - fresh water that is stored in the ground
humidity - amount of water vapor in the air
hydrogen - a colorless gas that is lighter than air and catches fire easily.
iceberg - floating chunk of ice that broke off an ice cap or glacier
ice cap - think sheet of ice covering a large area
infiltration - when rain hits the Earth it sinks into the ground in the process called infiltration
lake - large body of water surrounded by land
liquid - the state of matter that has a definite volume but no definite shape.
matter - anything that takes up space and has weight such as a solid, liquid, or gas
melt - to turn from a solid into a liquid when heat is added
molecule - the smallest part of a substance that displays all the chemical properties of that substance. It is made up of more than one atom.
ocean - large body of salt water that covers almost three-fourths of Earth; the world ocean is divided into the Pacific, Atlantic, Indian, and Arctic Oceans
oxygen - a colorless gas found in the air. Humans and animals neet oxygen to breath. Oxygen makes up 21% of the Earth's atmosphere.
photosynthesis - process by which green plants use the energy in sunlight to make their own food
precipitation - any form of water that falls from clouds to Earth, such as rain, snow, sleet, or hail
river - fresh water flowing in a channel
runoff - water moving along the top of the ground; water from precipitation or from melting glaciers or snow moving along the ground
salt water - water that contains salt, such as that found in the oceans and in certain inland bodies of water
solid - the state of matter that has a definite shape and a definite volume
stomata - is the small pores on plants that give off vapors and oxygen into the air
surface water - water on Earth's surface in lakes, ponds, and rivers
transpiration - process by which water evaporates through tiny holes in a plant's leaves
volume - the amount of space taken up by a three-dimensional shape such as a box or a room
water cycle - constant movement of water from Earth to the atmosphere and back to Earth; water evaporates, condenses to form clouds, and falls back to Earth as precipitation
water table - highest level of soil and rock that is completely filled with groundwater
water treatment plant - plant where water is treated to make it safe to drink
water vapor - water in the form of a gas